

package com.hazelcast.collection.impl.common;

import com.hazelcast.cluster.Member;
import com.hazelcast.collection.ItemEvent;
import com.hazelcast.core.ItemEventType;
import com.hazelcast.internal.serialization.Data;
import com.hazelcast.internal.serialization.SerializationService;

import java.io.IOException;
import java.io.NotSerializableException;
import java.io.ObjectOutputStream;
import java.io.Serial;

/**
 * An {@link ItemEvent} that is able to store a {@link Data}.
 */
public class DataAwareItemEvent<E> extends ItemEvent<E> {

    @Serial
    private static final long serialVersionUID = 1;

    private final transient Data dataItem;
    private final transient SerializationService serializationService;

    public DataAwareItemEvent(String name, ItemEventType itemEventType, Data dataItem, Member member, SerializationService serializationService) {
        super(name, itemEventType, null, member);
        this.dataItem = dataItem;
        this.serializationService = serializationService;
    }

    @Override
    public E getItem() {
        if (item == null && dataItem != null) {
            item = serializationService.toObject(dataItem);
        }
        return item;
    }

    public Data getItemData() {
        return dataItem;
    }

    @Serial
    private void writeObject(ObjectOutputStream out) throws IOException {
        throw new NotSerializableException();
    }
}
